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Analysis

  • max time kernel
    117s
  • max time network
    125s
  • platform
    windows7_x64
  • resource
    win7-20240221-en
  • resource tags

    arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
  • submitted
    09/04/2024, 19:42

General

  • Target

    2024-04-09_6e5b6d2afc58e54bc9b3f54e6148dee9_cryptolocker.exe

  • Size

    64KB

  • MD5

    6e5b6d2afc58e54bc9b3f54e6148dee9

  • SHA1

    a2396ca10909f712ad120a0afde83929b884cb6b

  • SHA256

    875e3434f0e0ccd5206362963af9cc7747857d91b48ddda9e9d161f1cfbfd7cd

  • SHA512

    67957e2329dbedae1832eac78b83f6d119bf83017b36a34767a3f092673da0dd16589a7510ca0f31768d0bf79871e99ad447ed8bdf4b05da9ef2d37bea432a8b

  • SSDEEP

    1536:Tj+jsMQMOtEvwDpj5HmpJpOUHECgNMo0vp2l9tMPvdfGyS:TCjsIOtEvwDpj5HE/OUHnSMY9

Score
9/10

Malware Config

Signatures

  • Detection of CryptoLocker Variants 5 IoCs
  • Detection of Cryptolocker Samples 5 IoCs
  • Executes dropped EXE 1 IoCs
  • Loads dropped DLL 1 IoCs
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s).

  • Modifies system certificate store 2 TTPs 3 IoCs
  • Suspicious use of WriteProcessMemory 4 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2024-04-09_6e5b6d2afc58e54bc9b3f54e6148dee9_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-04-09_6e5b6d2afc58e54bc9b3f54e6148dee9_cryptolocker.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious use of WriteProcessMemory
    PID:1716
    • C:\Users\Admin\AppData\Local\Temp\misid.exe
      "C:\Users\Admin\AppData\Local\Temp\misid.exe"
      2⤵
      • Executes dropped EXE
      • Modifies system certificate store
      PID:2920

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\94308059B57B3142E455B38A6EB92015

    Filesize

    68KB

    MD5

    29f65ba8e88c063813cc50a4ea544e93

    SHA1

    05a7040d5c127e68c25d81cc51271ffb8bef3568

    SHA256

    1ed81fa8dfb6999a9fedc6e779138ffd99568992e22d300acd181a6d2c8de184

    SHA512

    e29b2e92c496245bed3372578074407e8ef8882906ce10c35b3c8deebfefe01b5fd7f3030acaa693e175f4b7aca6cd7d8d10ae1c731b09c5fa19035e005de3aa

  • C:\Users\Admin\AppData\Local\Temp\Tar6CCE.tmp

    Filesize

    177KB

    MD5

    435a9ac180383f9fa094131b173a2f7b

    SHA1

    76944ea657a9db94f9a4bef38f88c46ed4166983

    SHA256

    67dc37ed50b8e63272b49a254a6039ee225974f1d767bb83eb1fd80e759a7c34

    SHA512

    1a6b277611959720a9c71114957620517ad94541302f164eb872bd322292a952409bafb8bc2ac793b16ad5f25d83f8594ccff2b7834e3c2b2b941e6fc84c009a

  • \Users\Admin\AppData\Local\Temp\misid.exe

    Filesize

    64KB

    MD5

    c6b4016fac33f4ce9dea6abc4425d935

    SHA1

    716db9f0330d533a255375c86f5fc16d372d7d28

    SHA256

    f7455bcb960bb931b9188ea91981c8c2d12bacb38ab9ad587fa811ca6c72b43f

    SHA512

    b56e70ca106dd759ca97ae42128a25aef701d3dd27de14c11f2ead1e718ef723e649df8e35e606788e4e8b108696a471c057ecb4e93ddf2e80fba9316ca97d51

  • memory/1716-0-0x0000000000500000-0x000000000050E000-memory.dmp

    Filesize

    56KB

  • memory/1716-1-0x00000000002C0000-0x00000000002C6000-memory.dmp

    Filesize

    24KB

  • memory/1716-2-0x00000000002C0000-0x00000000002C6000-memory.dmp

    Filesize

    24KB

  • memory/1716-3-0x00000000002F0000-0x00000000002F6000-memory.dmp

    Filesize

    24KB

  • memory/1716-15-0x0000000000500000-0x000000000050E000-memory.dmp

    Filesize

    56KB

  • memory/2920-16-0x0000000000500000-0x000000000050E000-memory.dmp

    Filesize

    56KB

  • memory/2920-18-0x00000000004B0000-0x00000000004B6000-memory.dmp

    Filesize

    24KB

  • memory/2920-20-0x00000000001D0000-0x00000000001D6000-memory.dmp

    Filesize

    24KB

  • memory/2920-95-0x0000000000500000-0x000000000050E000-memory.dmp

    Filesize

    56KB